The aim of this study was to determine to what extent leisure activities affect life satisfaction in young people. 670 students attending the University of Zagreb (Croatia) took part in the study, out of which 209 (31.2%) were males and 461 were females (68.8%). The largest number of students stated they have 2-3 hours of leisure time per day (n = 210; 31.3%), while the lowest number of students stated they have up to 1 hour of leisure time per day. The respondents filled in a survey which consisted of 2 parts: The Leisure Time Questionnaire and The Satisfaction with Life Scale (Diener et al., 1985). For the purpose of this study and based on the relevant literature, The Leisure Time Questionnaire was designed in which 6 composite variables were formed (Cultural activities, Relaxing activities, Electronic media and the Internet, Useful activities, Sports, Socializing and going out). According to the findings, the respondents tend to spend most of their leisure time in Relaxing activities, and the minimum of their time engaging in Cultural activities. Out of all 6 composite variables relating to young people’s leisure activities, only one, Socializing and going out, has proved to be a statistically significant predictor of life satisfaction in young people.